/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/

#include <fstream>
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkPipelineMonitorImageFilter.h"

int itkImageFileWriterStreamingTest1(int argc, char* argv[])
{
  if( argc < 3 )
    {
    std::cerr << "Usage: " << argv[0] << " input output [existingFile [ no-streaming 1|0] ]" << std::endl;
    return EXIT_FAILURE;
    }

  // We remove the output file
  if (argc == 3)
    {
      itksys::SystemTools::RemoveFile( argv[2] );
    }
  else
    {
      // copy this file to over write
      itksys::SystemTools::CopyAFile(argv[3], argv[2]);
    }


  unsigned int numberOfDataPieces = 4;


  bool forceNoStreamingInput = false;
  if ( argc > 4 )
    {
      if ( std::stoi( argv[4] ) == 1 )
          forceNoStreamingInput = true;
    }


  using PixelType = unsigned char;
  using ImageType = itk::Image<PixelType,3>;

  using ReaderType = itk::ImageFileReader<ImageType>;
  using WriterType = itk::ImageFileWriter< ImageType >;

  ReaderType::Pointer reader = ReaderType::New();
  reader->SetFileName( argv[1] );
  reader->SetUseStreaming( true );

  using MonitorFilter = itk::PipelineMonitorImageFilter<ImageType>;
  MonitorFilter::Pointer monitor = MonitorFilter::New();
  monitor->SetInput(reader->GetOutput());

  if ( forceNoStreamingInput )
    {
    monitor->UpdateLargestPossibleRegion();
    monitor->VerifyAllInputCanNotStream();
    }

  // Setup the writer
  WriterType::Pointer writer = WriterType::New();
  writer->SetFileName( argv[2] );
  writer->SetInput(monitor->GetOutput());
  writer->SetNumberOfStreamDivisions(numberOfDataPieces);


  try
    {
      writer->Update();
    }
  catch( itk::ExceptionObject & err )
    {
      std::cerr << "ExceptionObject caught !" << std::endl;
      std::cerr << err << std::endl;
      return EXIT_FAILURE;
    }


  bool passed = true;
  if( !forceNoStreamingInput )
    {
    if( !monitor->VerifyAllInputCanStream(numberOfDataPieces) )
      {
      passed = false;
      }
    }
  else
    {
    if( !monitor->VerifyAllNoUpdate() )
      {
      passed = false;
      }
    }


  if( !passed )
    {
    std::cout << monitor << std::endl;
    std::cout << "pipeline did not execute as expected!" << std::endl;
    return EXIT_FAILURE;
    }

  return EXIT_SUCCESS;
}
